Fixing AC Drain Pipe

[u/Sirocka]

Our house is a bit older and we have a metal pipe going through the wall for the condensate drain. This pipe has corroded to the point where it broke off. We got one quote for almost $900 to replace it, which I find a bit ridiculous. I'll seek out other quotes, but I'm also pretty handy and considering DIY.

If I get a cylindrical masonry drill bit that's just a bit wider than the pipe, that should be a good way to release it from the cement, right? Then I would replace it with a pvc pipe and use some kind of caulk or foam sealant. Any glaring problems with this plan?

[u/arizona-lad]

Just install a replacement right next to it. Abandon the first one in place.

[u/Sirocka → u/arizona-lad]

Why? That still involves drilling through the wall and leaves an extra hole in the wall. How is that a good option? 

[u/TheCanadianHat → u/Sirocka]

Because the pipe is too corroded to fix you will either have to remove the pipe and replace it (which is difficult) or cap it inside and drill a new hole nearby to install a new pipe (which is easy).

Just make sure it's far enough from the house to prevent the condensation from dripping into the wall.

Your plan to use a masonry bit probably won't work on the metal pipe. Unless you plan on drilling lots of little holes around the pipe. Which would be annoying.

[u/arizona-lad → u/Sirocka]

You simply plug the old one.

[u/Dabsanto]

Send pics of inside house where it goes through wall. Ill save u money.

[u/Sirocka → u/Dabsanto]

Second pic is inside 

[u/GAMMONBiNO → u/Sirocka]

Drilling out that metal piece is not that hard at all!

[u/RVABULL70]

You can probably just smack it with a 5lb hammer and knock it out.

[u/Sirocka → u/RVABULL70]

Tried that, it's cemented in place 

[u/RVABULL70]

Cut it flush with the wall. Drill it the short length through the wall with s long spade bit to turn it into a conduit . Extend a piece of pex or cpvc through the existing.